give reason that Chlorine atom 35 17Cl needs one electron to attain stable electronic configuration.
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Answers
Answer:
Referring to the octet rule, atoms attempt to get a noble gas electron configuration, which is eight valence electrons. Sodium has one valence electron, so giving it up would result in the same electron configuration as neon. Chlorine has seven valence electrons, so if it takes one it will have eight
Answer:
Explanation:
First lets see where chlorine is in the periodic table.
Its in group 7 ( or 17) and period 3.
Any element in the periodic table needs the electronic configuration of a noble gas ( group 8, last group) to be stable. The configuration is either a duplet ( 2 electrons in the last shell), which only occurs in the elements near Helium, the first noble gas.
or the configuration is an Octet ( 8 electrons in the last shell).
Every element tries to get the configuration to its nearest noble gas. For example, Hydrogen will try and get 1 electron so it has the configuration of helium, the nearest noble gas. Same with, lets say Potassium. The nearest noble gas is Argon, which is one period above potassium. Therefore, potassium will lose an electron and get the configuration of argon - 2,8,8.
In this instance, Chlorine needs to get the configuration of Argon, as it is the nearest noble gas- in the same period as chlorine. Chlorine has the electronic configuration of (2,8,7), and if it gets 1 more electron, it will get the desired configuration of Argon - 2,8,8 !!
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